If it had been colder here, air temp and ground temp, we would have at least 4 to 6" of snow on the ground, because it snowed hard from 10:00 am yesterday until at least 8:00 pm with very few breaks. Large flakes at times that looked like feathers. Really pretty, but melted almost as soon as it hit the ground.
I don't think there is any scientific evidence to support the theory that cold weather/snow kills bugs. If that were the case we shouldn't have had any bugs here at all last summer considering the fact that we had 15+ inches of snow on the ground for a week in February, plus temps at freezing or below, and sometimes very much below, for all that week. The bugs were as bad as I've ever seen them last summer, specially bugs that eat my plants.